public async void AddEntity(object sender, RoutedEventArgs e) { SelectedItem.Id = Guid.NewGuid(); SelectedItem.Name = TextName.Text; SelectedItem.Surname = TextSurname.Text; SelectedItem.DateOfBirth = DateTime.Parse(TextDeteOfBirth.Text); SelectedItem.Experience = TimeSpan.Parse(TextExperience.Text); await _pilotService.CreateEntityAsync(SelectedItem); AddButton.Visibility = Visibility.Collapsed; TextId.IsReadOnly = false; await ReloadEntitiesAsync(); }